docs: correct energy_totals connect-time snapshot claim

[Bre77]

Intent

• listen_EnergyTotals's docstring (and the matching AGENTS.md/CLAUDE.md note) claimed the server sends no snapshot on connect for energy_totals. It does - a connect-time snapshot arrives flagged isCache: true, same as live_status/site_info.
  • Fix: correct both the docstring and the project notes to describe the connect-time snapshot and what isCache means, while keeping the still-accurate parts (compact totals, not a full document; periodic-poll-only after that; silence between events isn't staleness).
• Docs-only change, no behavior or test changes.

[chatgpt-codex-connector]

💡 Codex Review

python-teslemetry-stream/teslemetry_stream/vehicle.py

Lines 325 to 328 in 29c5aa8

	if not self.stream.connected:
	return False
	topics = self.stream.topics
	return topics is None or SseTopic.CONFIG in topics

Treat mismatched VIN-scoped streams as stale

When a stream is constructed with vin=A, connect() subscribes only to /sse/A, but the public get_vehicle(B) method still creates a vehicle for B. Once that stream connects with the config topic enabled, this method reports B's record as live even though B's internal listener can never receive its config events; if B's cached record matches a requested field or prefer_typed value after the server changed it, the new no-op checks incorrectly skip the required PATCH. Include the stream's VIN scope in this liveness check, or reject mismatched get_vehicle() calls.

AGENTS.md reference: AGENTS.md:L19-L19

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